Stem-and-leaf Plot

http://www.uow.edu.au/student/attributes/statlit/modules/module2/centre.html

Stem-and-leaf plots are used to show frequency data. In other words, it represents the distribution of the data. The "stem" is the numbers on the left side of the verticle line and the leafs are on the right. The key at the top lets you know that the stems are actually in tens. This means that the "5" is actually "50". The values in the leaf section only represent one value and they follow the stem number. So for instance, if you look at the "5" stem it means the numbers within "50" are 51, 51, 52, 52, 54, 55, and 57. This is an easy way to represent data in a graphic form that is quick to read and does not sacrifice any of the information.